Underground pressure appearance laws analysis for fully mechanized top coal slice caving on high-dipping thick coal seams  

作　　者：YANG Sheng-li CAO Guang-ming LI Fu-sheng 

机构地区：[1]Faculty of Resources ＆ Safety Engineering, China University of Mining and Technology （Beijing）, Beijing 100083, China [2]China National CoalAssociation, Beijing 100713, China [3]Baotou Coal Subsidiary of China Shenhua Energy Co., Ltd, Baotou 014000, China

出　　处：《Journal of Coal Science & Engineering(China)》2011年第1期6-11,共6页煤炭学报（英文版）

基　　金：Supported by the Scientific Research Business of China University of Mining ＆ Technology （Beijing） （2009QZ04）; the National Natural Science Foundation of China （50974123）

摘　　要：Taking Adaohai Coal Mine as the example, underground pressure appearance laws of fully mechanized top coal slice caving on high-dipping and thick coal seams. Through site visit, theoretical analysis and discrete element calculation, the research shows that, as the mining deepens, underground stress of lower sublevels is more obvious and higher than that of upper sublevels and is higher in the air return roadway than that in the air intake roadway in the area that is near to the top coal. Because the top coal is thick and gangue is caved above the support, underground pressure to the working face is relatively gentle. Immediate roof will mainly fall down along the floor. Main roof and the rock bed above the main roof will move to the mined out area along the fault in the early stage and then fall down with the mined out area later. In addition, roof pressure mainly periodically appears in two directions along the trend and the dip.

关 键 词：steeply inclined and extremely thick coal seam horizontal fully mechanized top coal slice caving undergroundpressure numerical calculation 

分 类 号：TD823.49[矿业工程—煤矿开采] TD327.2[矿业工程—矿山开采]